1. if i buy the tier 3 alongside the tier 1 i already own , can it be stacked together and what features or counts do i get under that?

2. i added my facebook account that has quite a number of business pages under the bot i created, but i only added the bot to one of the pages i want it to function in, but i realise that if any messages come into my other pages it still shows up here and just out of curiosity i replied it then it disappeared after the conversation ended , but the ones for the original page i added were still showing, so how do i limit it to only receive messages from the page i added alone?
3. how do you count conversations ?
4. can i have multiple work space under the same plan i buy here?
5. i am seeing 3940 contacts , why is it fetching and showing all contacts from all my pages